AutoCodes – GMC – P1B17 GMC

P1B17 GMC Code - Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage

Quick Answer

The Hybrid/Electric Vehicle battery pack contains 288 cells. Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P1B17 GMC indicates Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage.
Common causes: Common causes include Faulty Hybrid/Electric Vehicle Battery Pack, Faulty Hybrid/Electric Vehicle Battery Interface Control Module.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 710

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 08, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1B17 GMC Description

The Hybrid/Electric Vehicle battery pack contains 288 cells. Groups of three cells are welded together in parallel. There are a total of 96 cell groups in the hybrid/EV battery pack assembly. These cell groups are electrically connected in-series. Each individual cell group is rated at 3.7 V, for a nominal system voltage of 355 V direct current. The battery cells are also grouped together into three sections. The first 90 cells/30 cell groups make up battery section one. This section is adjacent to the cowl and contains batteries 67 through to 96. Battery section two is located behind section one. It is made up of 72 cells/24 cell groups and contains batteries 43 through to 66. The transverse battery section is section number three, it is made up of the remaining 126 cells/42 cell groups and contains batteries 1 through to 42. The three battery sections are individually serviceable components.
The battery energy control module monitors the voltage of the 96 battery cell groups through the four hybrid/EV battery interface control modules. Voltage sense circuits are attached to each individual cell group, and these sense circuits terminate at a connector located on the top surface of the battery section. A serviceable auxiliary battery wiring harness joins this connector to a hybrid/EV battery interface control module, also located on the top surface of the battery section. The hybrid/EV battery interface control module encodes the voltage reading and transmits it to the battery energy control module through the battery control harness. There is one hybrid/EV battery interface control module located on battery sections one and two, and two hybrid/EV battery interface control modules associated with battery section three. The hybrid/EV battery interface control module, battery energy control module wiring harness, auxiliary battery wiring harness, and battery energy control module are all considered serviceable components.
The battery energy control module will determine when a fault condition is present. Diagnostics and system status are communicated from the battery energy control module to hybrid/EV powertrain control module 2 through serial data. The hybrid/EV powertrain control module 2 is the host controller for diagnostic trouble code information.

OBDII Code P1B17 GMC - Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage - AutoCodes.com — P1B17 GMC Code - Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P1B17 GMC?

Faulty Hybrid/Electric Vehicle Battery Pack
Faulty Hybrid/Electric Vehicle Battery Interface Control Module

How to Fix the DTC P1B17 GMC?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1B17 GMC code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P1B17 GMC Code

1. What are common symptoms of OBDII code P1B17 GMC related to the Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage?

- Common symptoms include reduced hybrid/electric vehicle power, poor fuel efficiency, and potential difficulty starting the vehicle.

2. What are the possible causes of OBDII code P1B17 GMC indicating Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage?

- Possible causes may include a faulty hybrid/electric vehicle battery, issues with the battery management system, or problems with the battery cooling system.

3. How can I diagnose the Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage issue associated with OBDII code P1B17 GMC?

- Diagnosis typically involves using a diagnostic scan tool to read the code, inspecting the hybrid/electric vehicle battery connections, and testing the battery voltage levels.

4. What are some repair tips for addressing OBDII code P1B17 GMC related to Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage?

- Repair tips may include checking and cleaning the battery terminals, ensuring proper battery cooling system operation, and consulting a certified hybrid/electric vehicle technician for advanced troubleshooting.

5. Are there any safety precautions to keep in mind when dealing with the Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage issue?

- Safety precautions include wearing appropriate personal protective equipment, avoiding contact with high-voltage components, and following manufacturer-specific procedures for handling hybrid/electric vehicle batteries.

6. Can driving with OBDII code P1B17 GMC indicating Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage cause further damage to the vehicle?

- Continuing to drive with this code may lead to more severe battery issues, reduced vehicle performance, and potential safety risks, so it is recommended to address the problem promptly.

7. How important is it to address OBDII code P1B17 GMC related to Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage promptly?

- Addressing this code promptly is crucial to prevent further damage to the hybrid/electric vehicle system, ensure optimal vehicle performance, and maintain overall safety.

8. Is it possible to reset the OBDII code P1B17 GMC associated with Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage without addressing the underlying issue?

- While it is possible to clear the code temporarily, it is important to address the underlying issue causing the code to prevent it from reoccurring and potentially causing more significant problems.

9. How can regular maintenance help prevent OBDII code P1B17 GMC related to Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage?

- Regular maintenance, including checking and servicing the hybrid/electric vehicle battery system, can help prevent issues that may trigger this code and ensure the vehicle operates smoothly.

10. Are there any recalls or technical service bulletins (TSBs) related to OBDII code P1B17 GMC Hybrid/Electric Vehicle Battery 27 Circuit Low Voltage?

- It is recommended to check with the vehicle manufacturer or authorized dealerships for any recalls or TSBs related to this specific OBDII code to stay informed about potential known issues and solutions.